Flora of North America species comparison

erect or ascending, leafy, nearly terete or obscurely angular, many-ribbed, stiff.

lax, erect to excurved, leafy toward base, filiform.

exceeding or exceeded by inflorescences;

blades linear, proximally flat, 1–5 mm wide, apex trigonous, tapering.

overtopped by scape;

blades filiform, distally flattened, channeled, tapering, to 1 mm wide, margins strongly involute, apex blunt.

terminal and axillary, clusters of corymbs 1–5, diffuse, branches ascending to divaricate; leafy bracts much exceeding axillary corymbs.

spikelet clusters 1–3, laterals widely spaced, all narrowly turbinate, ellipsoid, or ovoid; leafy bracts setaceous, overtopping proximal clusters, often overtopped by terminal ones.

redbrown to dark brown, ovoidlanceoloid, 3–6(–7) mm, apex acute;

fertile scales several, narrowly ovate, 2.5–3.5 mm, apex narrowly acute;

midrib included or shortexcurrent.

erect or ascending, redbrown, lanciform, mostly 4.5–5 mm, apex acute;

fertile scales lanceolate, (3–)4–4.5 mm, apex acute, apiculate.

perianth absent.

perianth absent.

1.3–1.5 mm;

body brown to blackish, tumidly lenticular, nearly orbicular, 0.6–1 × 0.6–1 mm, margins distinct, narrow, flowing into base of tubercle;

tubercle flat, narrowly triangular, at least 0.5 mm high, base broadly 2-lobed, apex acuminate.

2–3(–5) per spikelet;

stipe and receptacle 0.1–0.2(–0.3) mm, setose;

body brown with pale glassy center, narrowly obovoidellipsoid, lenticular, 1.2–1.5 mm, margins narrow, flowing to tubercle;

surfaces very finely lined longitudinally, transversely with wavy lines of tiny pits;

tubercle narrowly triangular or slightly concavesided, flattened, 0.7–1.2(–1.5) mm.